[media] v4l: move v4l2 core into a separate directory

Currently, the v4l2 core is mixed together with other non-core drivers.
Move them into a separate directory.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 1045 deletions

diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
deleted file mode 100644
index 9ebd5c540d10..000000000000
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ /dev/null
@@ -1,1045 +0,0 @@
-/*
- * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
- *	Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>
- *
- * Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
- * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
- * Copyright (C) 2001,2002  Andi Kleen, SuSE Labs
- * Copyright (C) 2003       Pavel Machek (pavel@ucw.cz)
- * Copyright (C) 2005       Philippe De Muyter (phdm@macqel.be)
- * Copyright (C) 2008       Hans Verkuil <hverkuil@xs4all.nl>
- *
- * These routines maintain argument size conversion between 32bit and 64bit
- * ioctls.
- */
-
-#include <linux/compat.h>
-#include <linux/module.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-dev.h>
-#include <media/v4l2-ioctl.h>
-
-static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	long ret = -ENOIOCTLCMD;
-
-	if (file->f_op->unlocked_ioctl)
-		ret = file->f_op->unlocked_ioctl(file, cmd, arg);
-
-	return ret;
-}
-
-
-struct v4l2_clip32 {
-	struct v4l2_rect        c;
-	compat_caddr_t 		next;
-};
-
-struct v4l2_window32 {
-	struct v4l2_rect        w;
-	__u32		  	field;	/* enum v4l2_field */
-	__u32			chromakey;
-	compat_caddr_t		clips; /* actually struct v4l2_clip32 * */
-	__u32			clipcount;
-	compat_caddr_t		bitmap;
-};
-
-static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
-{
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
-		copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
-		get_user(kp->field, &up->field) ||
-		get_user(kp->chromakey, &up->chromakey) ||
-		get_user(kp->clipcount, &up->clipcount))
-			return -EFAULT;
-	if (kp->clipcount > 2048)
-		return -EINVAL;
-	if (kp->clipcount) {
-		struct v4l2_clip32 __user *uclips;
-		struct v4l2_clip __user *kclips;
-		int n = kp->clipcount;
-		compat_caddr_t p;
-
-		if (get_user(p, &up->clips))
-			return -EFAULT;
-		uclips = compat_ptr(p);
-		kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
-		kp->clips = kclips;
-		while (--n >= 0) {
-			if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
-				return -EFAULT;
-			if (put_user(n ? kclips + 1 : NULL, &kclips->next))
-				return -EFAULT;
-			uclips += 1;
-			kclips += 1;
-		}
-	} else
-		kp->clips = NULL;
-	return 0;
-}
-
-static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
-{
-	if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) ||
-		put_user(kp->field, &up->field) ||
-		put_user(kp->chromakey, &up->chromakey) ||
-		put_user(kp->clipcount, &up->clipcount))
-			return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
-				struct v4l2_pix_format_mplane __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
-				struct v4l2_pix_format_mplane __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
-		return -EFAULT;
-	return 0;
-}
-
-struct v4l2_format32 {
-	__u32	type;	/* enum v4l2_buf_type */
-	union {
-		struct v4l2_pix_format	pix;
-		struct v4l2_pix_format_mplane	pix_mp;
-		struct v4l2_window32	win;
-		struct v4l2_vbi_format	vbi;
-		struct v4l2_sliced_vbi_format	sliced;
-		__u8	raw_data[200];        /* user-defined */
-	} fmt;
-};
-
-/**
- * struct v4l2_create_buffers32 - VIDIOC_CREATE_BUFS32 argument
- * @index:	on return, index of the first created buffer
- * @count:	entry: number of requested buffers,
- *		return: number of created buffers
- * @memory:	buffer memory type
- * @format:	frame format, for which buffers are requested
- * @reserved:	future extensions
- */
-struct v4l2_create_buffers32 {
-	__u32			index;
-	__u32			count;
-	__u32			memory;	/* enum v4l2_memory */
-	struct v4l2_format32	format;
-	__u32			reserved[8];
-};
-
-static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	switch (kp->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
-						  &up->fmt.pix_mp);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data)))
-			return -EFAULT;
-		return 0;
-	default:
-		printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
-								kp->type);
-		return -EINVAL;
-	}
-}
-
-static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
-			get_user(kp->type, &up->type))
-			return -EFAULT;
-	return __get_v4l2_format32(kp, up);
-}
-
-static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
-{
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) ||
-	    copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format.fmt)))
-			return -EFAULT;
-	return __get_v4l2_format32(&kp->format, &up->format);
-}
-
-static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	switch (kp->type) {
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-		return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
-	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
-						  &up->fmt.pix_mp);
-	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-		return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
-	case V4L2_BUF_TYPE_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_VBI_OUTPUT:
-		return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
-	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-		return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
-	case V4L2_BUF_TYPE_PRIVATE:
-		if (copy_to_user(up, kp, sizeof(up->fmt.raw_data)))
-			return -EFAULT;
-		return 0;
-	default:
-		printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
-								kp->type);
-		return -EINVAL;
-	}
-}
-
-static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
-		put_user(kp->type, &up->type))
-		return -EFAULT;
-	return __put_v4l2_format32(kp, up);
-}
-
-static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) ||
-	    copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format.fmt)))
-			return -EFAULT;
-	return __put_v4l2_format32(&kp->format, &up->format);
-}
-
-struct v4l2_standard32 {
-	__u32		     index;
-	__u32		     id[2]; /* __u64 would get the alignment wrong */
-	__u8		     name[24];
-	struct v4l2_fract    frameperiod; /* Frames, not fields */
-	__u32		     framelines;
-	__u32		     reserved[4];
-};
-
-static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
-{
-	/* other fields are not set by the user, nor used by the driver */
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
-		get_user(kp->index, &up->index))
-		return -EFAULT;
-	return 0;
-}
-
-static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
-		put_user(kp->index, &up->index) ||
-		copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
-		copy_to_user(up->name, kp->name, 24) ||
-		copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
-		put_user(kp->framelines, &up->framelines) ||
-		copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
-			return -EFAULT;
-	return 0;
-}
-
-struct v4l2_plane32 {
-	__u32			bytesused;
-	__u32			length;
-	union {
-		__u32		mem_offset;
-		compat_long_t	userptr;
-	} m;
-	__u32			data_offset;
-	__u32			reserved[11];
-};
-
-struct v4l2_buffer32 {
-	__u32			index;
-	__u32			type;	/* enum v4l2_buf_type */
-	__u32			bytesused;
-	__u32			flags;
-	__u32			field;	/* enum v4l2_field */
-	struct compat_timeval	timestamp;
-	struct v4l2_timecode	timecode;
-	__u32			sequence;
-
-	/* memory location */
-	__u32			memory;	/* enum v4l2_memory */
-	union {
-		__u32           offset;
-		compat_long_t   userptr;
-		compat_caddr_t  planes;
-	} m;
-	__u32			length;
-	__u32			reserved2;
-	__u32			reserved;
-};
-
-static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
-				enum v4l2_memory memory)
-{
-	void __user *up_pln;
-	compat_long_t p;
-
-	if (copy_in_user(up, up32, 2 * sizeof(__u32)) ||
-		copy_in_user(&up->data_offset, &up32->data_offset,
-				sizeof(__u32)))
-		return -EFAULT;
-
-	if (memory == V4L2_MEMORY_USERPTR) {
-		if (get_user(p, &up32->m.userptr))
-			return -EFAULT;
-		up_pln = compat_ptr(p);
-		if (put_user((unsigned long)up_pln, &up->m.userptr))
-			return -EFAULT;
-	} else {
-		if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
-					sizeof(__u32)))
-			return -EFAULT;
-	}
-
-	return 0;
-}
-
-static int put_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
-				enum v4l2_memory memory)
-{
-	if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
-		copy_in_user(&up32->data_offset, &up->data_offset,
-				sizeof(__u32)))
-		return -EFAULT;
-
-	/* For MMAP, driver might've set up the offset, so copy it back.
-	 * USERPTR stays the same (was userspace-provided), so no copying. */
-	if (memory == V4L2_MEMORY_MMAP)
-		if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset,
-					sizeof(__u32)))
-			return -EFAULT;
-
-	return 0;
-}
-
-static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
-{
-	struct v4l2_plane32 __user *uplane32;
-	struct v4l2_plane __user *uplane;
-	compat_caddr_t p;
-	int num_planes;
-	int ret;
-
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
-		get_user(kp->index, &up->index) ||
-		get_user(kp->type, &up->type) ||
-		get_user(kp->flags, &up->flags) ||
-		get_user(kp->memory, &up->memory))
-			return -EFAULT;
-
-	if (V4L2_TYPE_IS_OUTPUT(kp->type))
-		if (get_user(kp->bytesused, &up->bytesused) ||
-			get_user(kp->field, &up->field) ||
-			get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
-			get_user(kp->timestamp.tv_usec,
-					&up->timestamp.tv_usec))
-			return -EFAULT;
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
-		if (get_user(kp->length, &up->length))
-			return -EFAULT;
-
-		num_planes = kp->length;
-		if (num_planes == 0) {
-			kp->m.planes = NULL;
-			/* num_planes == 0 is legal, e.g. when userspace doesn't
-			 * need planes array on DQBUF*/
-			return 0;
-		}
-
-		if (get_user(p, &up->m.planes))
-			return -EFAULT;
-
-		uplane32 = compat_ptr(p);
-		if (!access_ok(VERIFY_READ, uplane32,
-				num_planes * sizeof(struct v4l2_plane32)))
-			return -EFAULT;
-
-		/* We don't really care if userspace decides to kill itself
-		 * by passing a very big num_planes value */
-		uplane = compat_alloc_user_space(num_planes *
-						sizeof(struct v4l2_plane));
-		kp->m.planes = uplane;
-
-		while (--num_planes >= 0) {
-			ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
-			if (ret)
-				return ret;
-			++uplane;
-			++uplane32;
-		}
-	} else {
-		switch (kp->memory) {
-		case V4L2_MEMORY_MMAP:
-			if (get_user(kp->length, &up->length) ||
-				get_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		case V4L2_MEMORY_USERPTR:
-			{
-			compat_long_t tmp;
-
-			if (get_user(kp->length, &up->length) ||
-			    get_user(tmp, &up->m.userptr))
-				return -EFAULT;
-
-			kp->m.userptr = (unsigned long)compat_ptr(tmp);
-			}
-			break;
-		case V4L2_MEMORY_OVERLAY:
-			if (get_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		}
-	}
-
-	return 0;
-}
-
-static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
-{
-	struct v4l2_plane32 __user *uplane32;
-	struct v4l2_plane __user *uplane;
-	compat_caddr_t p;
-	int num_planes;
-	int ret;
-
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
-		put_user(kp->index, &up->index) ||
-		put_user(kp->type, &up->type) ||
-		put_user(kp->flags, &up->flags) ||
-		put_user(kp->memory, &up->memory))
-			return -EFAULT;
-
-	if (put_user(kp->bytesused, &up->bytesused) ||
-		put_user(kp->field, &up->field) ||
-		put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
-		put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
-		copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
-		put_user(kp->sequence, &up->sequence) ||
-		put_user(kp->reserved2, &up->reserved2) ||
-		put_user(kp->reserved, &up->reserved))
-			return -EFAULT;
-
-	if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
-		num_planes = kp->length;
-		if (num_planes == 0)
-			return 0;
-
-		uplane = kp->m.planes;
-		if (get_user(p, &up->m.planes))
-			return -EFAULT;
-		uplane32 = compat_ptr(p);
-
-		while (--num_planes >= 0) {
-			ret = put_v4l2_plane32(uplane, uplane32, kp->memory);
-			if (ret)
-				return ret;
-			++uplane;
-			++uplane32;
-		}
-	} else {
-		switch (kp->memory) {
-		case V4L2_MEMORY_MMAP:
-			if (put_user(kp->length, &up->length) ||
-				put_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		case V4L2_MEMORY_USERPTR:
-			if (put_user(kp->length, &up->length) ||
-				put_user(kp->m.userptr, &up->m.userptr))
-				return -EFAULT;
-			break;
-		case V4L2_MEMORY_OVERLAY:
-			if (put_user(kp->m.offset, &up->m.offset))
-				return -EFAULT;
-			break;
-		}
-	}
-
-	return 0;
-}
-
-struct v4l2_framebuffer32 {
-	__u32			capability;
-	__u32			flags;
-	compat_caddr_t 		base;
-	struct v4l2_pix_format	fmt;
-};
-
-static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
-{
-	u32 tmp;
-
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
-		get_user(tmp, &up->base) ||
-		get_user(kp->capability, &up->capability) ||
-		get_user(kp->flags, &up->flags))
-			return -EFAULT;
-	kp->base = compat_ptr(tmp);
-	get_v4l2_pix_format(&kp->fmt, &up->fmt);
-	return 0;
-}
-
-static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
-{
-	u32 tmp = (u32)((unsigned long)kp->base);
-
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
-		put_user(tmp, &up->base) ||
-		put_user(kp->capability, &up->capability) ||
-		put_user(kp->flags, &up->flags))
-			return -EFAULT;
-	put_v4l2_pix_format(&kp->fmt, &up->fmt);
-	return 0;
-}
-
-struct v4l2_input32 {
-	__u32	     index;		/*  Which input */
-	__u8	     name[32];		/*  Label */
-	__u32	     type;		/*  Type of input */
-	__u32	     audioset;		/*  Associated audios (bitfield) */
-	__u32        tuner;             /*  Associated tuner */
-	v4l2_std_id  std;
-	__u32	     status;
-	__u32	     reserved[4];
-} __attribute__ ((packed));
-
-/* The 64-bit v4l2_input struct has extra padding at the end of the struct.
-   Otherwise it is identical to the 32-bit version. */
-static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
-{
-	if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
-		return -EFAULT;
-	return 0;
-}
-
-static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
-{
-	if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
-		return -EFAULT;
-	return 0;
-}
-
-struct v4l2_ext_controls32 {
-       __u32 ctrl_class;
-       __u32 count;
-       __u32 error_idx;
-       __u32 reserved[2];
-       compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
-};
-
-struct v4l2_ext_control32 {
-	__u32 id;
-	__u32 size;
-	__u32 reserved2[1];
-	union {
-		__s32 value;
-		__s64 value64;
-		compat_caddr_t string; /* actually char * */
-	};
-} __attribute__ ((packed));
-
-/* The following function really belong in v4l2-common, but that causes
-   a circular dependency between modules. We need to think about this, but
-   for now this will do. */
-
-/* Return non-zero if this control is a pointer type. Currently only
-   type STRING is a pointer type. */
-static inline int ctrl_is_pointer(u32 id)
-{
-	switch (id) {
-	case V4L2_CID_RDS_TX_PS_NAME:
-	case V4L2_CID_RDS_TX_RADIO_TEXT:
-		return 1;
-	default:
-		return 0;
-	}
-}
-
-static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
-{
-	struct v4l2_ext_control32 __user *ucontrols;
-	struct v4l2_ext_control __user *kcontrols;
-	int n;
-	compat_caddr_t p;
-
-	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
-		get_user(kp->ctrl_class, &up->ctrl_class) ||
-		get_user(kp->count, &up->count) ||
-		get_user(kp->error_idx, &up->error_idx) ||
-		copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
-			return -EFAULT;
-	n = kp->count;
-	if (n == 0) {
-		kp->controls = NULL;
-		return 0;
-	}
-	if (get_user(p, &up->controls))
-		return -EFAULT;
-	ucontrols = compat_ptr(p);
-	if (!access_ok(VERIFY_READ, ucontrols,
-			n * sizeof(struct v4l2_ext_control32)))
-		return -EFAULT;
-	kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
-	kp->controls = kcontrols;
-	while (--n >= 0) {
-		if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
-			return -EFAULT;
-		if (ctrl_is_pointer(kcontrols->id)) {
-			void __user *s;
-
-			if (get_user(p, &ucontrols->string))
-				return -EFAULT;
-			s = compat_ptr(p);
-			if (put_user(s, &kcontrols->string))
-				return -EFAULT;
-		}
-		ucontrols++;
-		kcontrols++;
-	}
-	return 0;
-}
-
-static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
-{
-	struct v4l2_ext_control32 __user *ucontrols;
-	struct v4l2_ext_control __user *kcontrols = kp->controls;
-	int n = kp->count;
-	compat_caddr_t p;
-
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
-		put_user(kp->ctrl_class, &up->ctrl_class) ||
-		put_user(kp->count, &up->count) ||
-		put_user(kp->error_idx, &up->error_idx) ||
-		copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
-			return -EFAULT;
-	if (!kp->count)
-		return 0;
-
-	if (get_user(p, &up->controls))
-		return -EFAULT;
-	ucontrols = compat_ptr(p);
-	if (!access_ok(VERIFY_WRITE, ucontrols,
-			n * sizeof(struct v4l2_ext_control32)))
-		return -EFAULT;
-
-	while (--n >= 0) {
-		unsigned size = sizeof(*ucontrols);
-
-		/* Do not modify the pointer when copying a pointer control.
-		   The contents of the pointer was changed, not the pointer
-		   itself. */
-		if (ctrl_is_pointer(kcontrols->id))
-			size -= sizeof(ucontrols->value64);
-		if (copy_in_user(ucontrols, kcontrols, size))
-			return -EFAULT;
-		ucontrols++;
-		kcontrols++;
-	}
-	return 0;
-}
-
-struct v4l2_event32 {
-	__u32				type;
-	union {
-		__u8			data[64];
-	} u;
-	__u32				pending;
-	__u32				sequence;
-	struct compat_timespec		timestamp;
-	__u32				id;
-	__u32				reserved[8];
-};
-
-static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up)
-{
-	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) ||
-		put_user(kp->type, &up->type) ||
-		copy_to_user(&up->u, &kp->u, sizeof(kp->u)) ||
-		put_user(kp->pending, &up->pending) ||
-		put_user(kp->sequence, &up->sequence) ||
-		put_compat_timespec(&kp->timestamp, &up->timestamp) ||
-		put_user(kp->id, &up->id) ||
-		copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32)))
-			return -EFAULT;
-	return 0;
-}
-
-#define VIDIOC_G_FMT32		_IOWR('V',  4, struct v4l2_format32)
-#define VIDIOC_S_FMT32		_IOWR('V',  5, struct v4l2_format32)
-#define VIDIOC_QUERYBUF32	_IOWR('V',  9, struct v4l2_buffer32)
-#define VIDIOC_G_FBUF32		_IOR ('V', 10, struct v4l2_framebuffer32)
-#define VIDIOC_S_FBUF32		_IOW ('V', 11, struct v4l2_framebuffer32)
-#define VIDIOC_QBUF32		_IOWR('V', 15, struct v4l2_buffer32)
-#define VIDIOC_DQBUF32		_IOWR('V', 17, struct v4l2_buffer32)
-#define VIDIOC_ENUMSTD32	_IOWR('V', 25, struct v4l2_standard32)
-#define VIDIOC_ENUMINPUT32	_IOWR('V', 26, struct v4l2_input32)
-#define VIDIOC_TRY_FMT32      	_IOWR('V', 64, struct v4l2_format32)
-#define VIDIOC_G_EXT_CTRLS32    _IOWR('V', 71, struct v4l2_ext_controls32)
-#define VIDIOC_S_EXT_CTRLS32    _IOWR('V', 72, struct v4l2_ext_controls32)
-#define VIDIOC_TRY_EXT_CTRLS32  _IOWR('V', 73, struct v4l2_ext_controls32)
-#define	VIDIOC_DQEVENT32	_IOR ('V', 89, struct v4l2_event32)
-#define VIDIOC_CREATE_BUFS32	_IOWR('V', 92, struct v4l2_create_buffers32)
-#define VIDIOC_PREPARE_BUF32	_IOWR('V', 93, struct v4l2_buffer32)
-
-#define VIDIOC_OVERLAY32	_IOW ('V', 14, s32)
-#define VIDIOC_STREAMON32	_IOW ('V', 18, s32)
-#define VIDIOC_STREAMOFF32	_IOW ('V', 19, s32)
-#define VIDIOC_G_INPUT32	_IOR ('V', 38, s32)
-#define VIDIOC_S_INPUT32	_IOWR('V', 39, s32)
-#define VIDIOC_G_OUTPUT32	_IOR ('V', 46, s32)
-#define VIDIOC_S_OUTPUT32	_IOWR('V', 47, s32)
-
-static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	union {
-		struct v4l2_format v2f;
-		struct v4l2_buffer v2b;
-		struct v4l2_framebuffer v2fb;
-		struct v4l2_input v2i;
-		struct v4l2_standard v2s;
-		struct v4l2_ext_controls v2ecs;
-		struct v4l2_event v2ev;
-		struct v4l2_create_buffers v2crt;
-		unsigned long vx;
-		int vi;
-	} karg;
-	void __user *up = compat_ptr(arg);
-	int compatible_arg = 1;
-	long err = 0;
-
-	/* First, convert the command. */
-	switch (cmd) {
-	case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
-	case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
-	case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
-	case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
-	case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
-	case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
-	case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
-	case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
-	case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
-	case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
-	case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
-	case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
-	case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
-	case VIDIOC_DQEVENT32: cmd = VIDIOC_DQEVENT; break;
-	case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
-	case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
-	case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
-	case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
-	case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
-	case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
-	case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
-	case VIDIOC_CREATE_BUFS32: cmd = VIDIOC_CREATE_BUFS; break;
-	case VIDIOC_PREPARE_BUF32: cmd = VIDIOC_PREPARE_BUF; break;
-	}
-
-	switch (cmd) {
-	case VIDIOC_OVERLAY:
-	case VIDIOC_STREAMON:
-	case VIDIOC_STREAMOFF:
-	case VIDIOC_S_INPUT:
-	case VIDIOC_S_OUTPUT:
-		err = get_user(karg.vi, (s32 __user *)up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_INPUT:
-	case VIDIOC_G_OUTPUT:
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_FMT:
-	case VIDIOC_S_FMT:
-	case VIDIOC_TRY_FMT:
-		err = get_v4l2_format32(&karg.v2f, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_CREATE_BUFS:
-		err = get_v4l2_create32(&karg.v2crt, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_PREPARE_BUF:
-	case VIDIOC_QUERYBUF:
-	case VIDIOC_QBUF:
-	case VIDIOC_DQBUF:
-		err = get_v4l2_buffer32(&karg.v2b, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_S_FBUF:
-		err = get_v4l2_framebuffer32(&karg.v2fb, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_FBUF:
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_ENUMSTD:
-		err = get_v4l2_standard32(&karg.v2s, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_ENUMINPUT:
-		err = get_v4l2_input32(&karg.v2i, up);
-		compatible_arg = 0;
-		break;
-
-	case VIDIOC_G_EXT_CTRLS:
-	case VIDIOC_S_EXT_CTRLS:
-	case VIDIOC_TRY_EXT_CTRLS:
-		err = get_v4l2_ext_controls32(&karg.v2ecs, up);
-		compatible_arg = 0;
-		break;
-	case VIDIOC_DQEVENT:
-		compatible_arg = 0;
-		break;
-	}
-	if (err)
-		return err;
-
-	if (compatible_arg)
-		err = native_ioctl(file, cmd, (unsigned long)up);
-	else {
-		mm_segment_t old_fs = get_fs();
-
-		set_fs(KERNEL_DS);
-		err = native_ioctl(file, cmd, (unsigned long)&karg);
-		set_fs(old_fs);
-	}
-
-	/* Special case: even after an error we need to put the
-	   results back for these ioctls since the error_idx will
-	   contain information on which control failed. */
-	switch (cmd) {
-	case VIDIOC_G_EXT_CTRLS:
-	case VIDIOC_S_EXT_CTRLS:
-	case VIDIOC_TRY_EXT_CTRLS:
-		if (put_v4l2_ext_controls32(&karg.v2ecs, up))
-			err = -EFAULT;
-		break;
-	}
-	if (err)
-		return err;
-
-	switch (cmd) {
-	case VIDIOC_S_INPUT:
-	case VIDIOC_S_OUTPUT:
-	case VIDIOC_G_INPUT:
-	case VIDIOC_G_OUTPUT:
-		err = put_user(((s32)karg.vi), (s32 __user *)up);
-		break;
-
-	case VIDIOC_G_FBUF:
-		err = put_v4l2_framebuffer32(&karg.v2fb, up);
-		break;
-
-	case VIDIOC_DQEVENT:
-		err = put_v4l2_event32(&karg.v2ev, up);
-		break;
-
-	case VIDIOC_G_FMT:
-	case VIDIOC_S_FMT:
-	case VIDIOC_TRY_FMT:
-		err = put_v4l2_format32(&karg.v2f, up);
-		break;
-
-	case VIDIOC_CREATE_BUFS:
-		err = put_v4l2_create32(&karg.v2crt, up);
-		break;
-
-	case VIDIOC_QUERYBUF:
-	case VIDIOC_QBUF:
-	case VIDIOC_DQBUF:
-		err = put_v4l2_buffer32(&karg.v2b, up);
-		break;
-
-	case VIDIOC_ENUMSTD:
-		err = put_v4l2_standard32(&karg.v2s, up);
-		break;
-
-	case VIDIOC_ENUMINPUT:
-		err = put_v4l2_input32(&karg.v2i, up);
-		break;
-	}
-	return err;
-}
-
-long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct video_device *vdev = video_devdata(file);
-	long ret = -ENOIOCTLCMD;
-
-	if (!file->f_op->unlocked_ioctl)
-		return ret;
-
-	switch (cmd) {
-	case VIDIOC_QUERYCAP:
-	case VIDIOC_RESERVED:
-	case VIDIOC_ENUM_FMT:
-	case VIDIOC_G_FMT32:
-	case VIDIOC_S_FMT32:
-	case VIDIOC_REQBUFS:
-	case VIDIOC_QUERYBUF32:
-	case VIDIOC_G_FBUF32:
-	case VIDIOC_S_FBUF32:
-	case VIDIOC_OVERLAY32:
-	case VIDIOC_QBUF32:
-	case VIDIOC_DQBUF32:
-	case VIDIOC_STREAMON32:
-	case VIDIOC_STREAMOFF32:
-	case VIDIOC_G_PARM:
-	case VIDIOC_S_PARM:
-	case VIDIOC_G_STD:
-	case VIDIOC_S_STD:
-	case VIDIOC_ENUMSTD32:
-	case VIDIOC_ENUMINPUT32:
-	case VIDIOC_G_CTRL:
-	case VIDIOC_S_CTRL:
-	case VIDIOC_G_TUNER:
-	case VIDIOC_S_TUNER:
-	case VIDIOC_G_AUDIO:
-	case VIDIOC_S_AUDIO:
-	case VIDIOC_QUERYCTRL:
-	case VIDIOC_QUERYMENU:
-	case VIDIOC_G_INPUT32:
-	case VIDIOC_S_INPUT32:
-	case VIDIOC_G_OUTPUT32:
-	case VIDIOC_S_OUTPUT32:
-	case VIDIOC_ENUMOUTPUT:
-	case VIDIOC_G_AUDOUT:
-	case VIDIOC_S_AUDOUT:
-	case VIDIOC_G_MODULATOR:
-	case VIDIOC_S_MODULATOR:
-	case VIDIOC_S_FREQUENCY:
-	case VIDIOC_G_FREQUENCY:
-	case VIDIOC_CROPCAP:
-	case VIDIOC_G_CROP:
-	case VIDIOC_S_CROP:
-	case VIDIOC_G_SELECTION:
-	case VIDIOC_S_SELECTION:
-	case VIDIOC_G_JPEGCOMP:
-	case VIDIOC_S_JPEGCOMP:
-	case VIDIOC_QUERYSTD:
-	case VIDIOC_TRY_FMT32:
-	case VIDIOC_ENUMAUDIO:
-	case VIDIOC_ENUMAUDOUT:
-	case VIDIOC_G_PRIORITY:
-	case VIDIOC_S_PRIORITY:
-	case VIDIOC_G_SLICED_VBI_CAP:
-	case VIDIOC_LOG_STATUS:
-	case VIDIOC_G_EXT_CTRLS32:
-	case VIDIOC_S_EXT_CTRLS32:
-	case VIDIOC_TRY_EXT_CTRLS32:
-	case VIDIOC_ENUM_FRAMESIZES:
-	case VIDIOC_ENUM_FRAMEINTERVALS:
-	case VIDIOC_G_ENC_INDEX:
-	case VIDIOC_ENCODER_CMD:
-	case VIDIOC_TRY_ENCODER_CMD:
-	case VIDIOC_DECODER_CMD:
-	case VIDIOC_TRY_DECODER_CMD:
-	case VIDIOC_DBG_S_REGISTER:
-	case VIDIOC_DBG_G_REGISTER:
-	case VIDIOC_DBG_G_CHIP_IDENT:
-	case VIDIOC_S_HW_FREQ_SEEK:
-	case VIDIOC_ENUM_DV_PRESETS:
-	case VIDIOC_S_DV_PRESET:
-	case VIDIOC_G_DV_PRESET:
-	case VIDIOC_QUERY_DV_PRESET:
-	case VIDIOC_S_DV_TIMINGS:
-	case VIDIOC_G_DV_TIMINGS:
-	case VIDIOC_DQEVENT:
-	case VIDIOC_DQEVENT32:
-	case VIDIOC_SUBSCRIBE_EVENT:
-	case VIDIOC_UNSUBSCRIBE_EVENT:
-	case VIDIOC_CREATE_BUFS32:
-	case VIDIOC_PREPARE_BUF32:
-	case VIDIOC_ENUM_DV_TIMINGS:
-	case VIDIOC_QUERY_DV_TIMINGS:
-	case VIDIOC_DV_TIMINGS_CAP:
-	case VIDIOC_ENUM_FREQ_BANDS:
-		ret = do_video_ioctl(file, cmd, arg);
-		break;
-
-	default:
-		if (vdev->fops->compat_ioctl32)
-			ret = vdev->fops->compat_ioctl32(file, cmd, arg);
-
-		if (ret == -ENOIOCTLCMD)
-			printk(KERN_WARNING "compat_ioctl32: "
-				"unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
-				_IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd),
-				cmd);
-		break;
-	}
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);